Published:Journal of Chromatographic Science, ISSN 0021-9665 Volume 46, Number 4, April 2008, pp. 345-350
Simultaneous Determination of Five Fat-Soluble Vitamins in Feed by High-Performance Liquid Chromatography Following Solid-Phase Extraction
Xiuping Xue, Jinming You, and Pingli He
http://www.j-chrom-sci.com/abstracts/2008/april/345-he.html